Many watchmakers consider water resistance as an essential characteristic of the timepiece, based on the industry’s standards that have become the basis of most watch manufacturers. The first standard is known as the ISO 2281 or the Water-Resistant Watches Standard, created by the International Organization for Standardization (ISO). First identified in 1990 as ISO 2281:1990, which introduced the term water-resistant watches instead of ‘waterproof.’ For diving watches, a different ISO is responsible for its regulation. The ISO 6425 oversees the standard set for the manufacturing of diving watches. Further defining dive timepieces as watches that can resist pressure when diving...